live-boot: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/bin/live-boot - from package: live-boot

You may install the required package with command apt-get install {package}

Error in other languages:
live-boot: bevel nie gevind nie
live-boot: comandă negăsită
live-boot: comando não encontrado
live-boot: commande introuvable
live-boot: command not found
live-boot: käsku ei ole
live-boot: không tìm thấy lệnh
live-boot: komanda nerasta
live-boot: Kommando nicht gefunden.
live-boot: kommandot finns inte
live-boot: komut yok
live-boot: nie znaleziono polecenia
live-boot: níor aimsíodh an t-ordú
live-boot: no se encontró la orden
live-boot: no s'ha trobat l'ordre
live-boot: opdracht niet gevonden
live-boot: parancs nem található
live-boot: perintah tidak ditemukan
live-boot: príkaz nenájdený
live-boot: příkaz nenalezen
live-boot: команда не найдена
live-boot: командата не е открита
live-boot: 命令找不到
live-boot: コマンドが見つかりません